Specifications for Anita C/VIII

Manufacturer:		Sumlock Comptometer LTD/Bell Punch LTD
Model Number:		Anita C/VIII  (Mark 8)
Serial Number:		003108
Date of Manufacture:	1963
Manufactured In:	London, England
Original Price:		Approx. $2700 US
Weight:			Approx. 28 Pounds
Size:			15" Wide, 16" Deep, 9 1/2" High
Power Requirement:	European Power, 220VAC, 50Hz
Display Technology:	Nixie Tube,  ZM-1080
Logic Technology:	177 Gas-Filled Thyratron Tubes (Ring-Counters)
			Hivac XC27/XC31
			1 Dekatron Counter Tube (GS-10D) (Keyboard Scan)
			11 Vacuum Tubes (12AT7/ECC81)
			Hundreds of Dual Selenium Rectifiers (Logic Gating)
Clock Frequency:	~3.6 KHz
Digits of Capacity:	12, No zero suppression
Decimal Modes:		Fixed, semi-automatic, Neon Tube Indicators
Arithmetic Logic:	Arithmetic
Math Functions:		Four Function
Constant:		No
Memories:		None
Notes:			The Anita Mk8 is generally regarded as the first commercially-available mass-market all-electronic four-function calculator.

Previous Machine:	Curta Type II
Next Machine:		Friden 130

Documentation:		Cover of Operator's Manual [35K]

Web References:		Nixie Indicators and Decimal Counting Tubes [by Tom Jennings]
			Display and Counting Tubes [by Mike Harrison]
			YouTube Video of Anita C/VII in Operation


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